9138272208 has 160 divisors (see below), whose sum is σ = 27576484992. Its totient is φ = 2581708800.

The previous prime is 9138272153. The next prime is 9138272219. The reversal of 9138272208 is 8022728319.

It is a happy number.

9138272208 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 9138272208.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 424423 + ... + 445433.

Almost surely, 2^9138272208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9138272208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13788242496).

9138272208 is an abundant number, since it is smaller than the sum of its proper divisors (18438212784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9138272208 is a wasteful number, since it uses less digits than its factorization.

9138272208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21093 (or 21087 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 9138272208 is about 95594.3105419983. The cubic root of 9138272208 is about 2090.6822408900.

The spelling of 9138272208 in words is "nine billion, one hundred thirty-eight million, two hundred seventy-two thousand, two hundred eight".